Error 100873 — Multipack quantity inconsistent

Your number_of_items, package_quantity, and total_count_per_pack values don't add up correctly. For example, declaring 3 items at 4 per pack but title says 'Pack of 6'.

Amazon validates multipack math: number_of_items × items_per_unit should match the title's pack size and the units_per_box should align with shipping calculations.

1. Set number_of_items to the actual number of identical units the buyer receives (e.g., 6 for a six-pack).
2. Set package_quantity to 1 if it's a single retail package; higher if you're selling cases of multiple packages.
3. Make sure the title's pack designation matches: 'Pack of 6' should have number_of_items=6.
4. For variations: each variation can have different multipack values.

• Confusing 'Pack of 3 boxes of 4' (number_of_items=12) with 'Pack of 3' (number_of_items=3)
• Forgetting to update title when changing pack size